fiber
Fiber supplements
Half of the 6,987 fiber supplements in the NIH label database that print an amount list 2 g or less per serving; the middle half list 1 g to 4 g (DSLD version 9.4.0, January 2026). The 506 products whose only supplement ingredient is fiber list a median of 2 g.
- Products listing it
- 8,7186,987 print an amount; 74 list it inside a blend without an amount
- Median per serving
- 2 gmiddle half 1 g to 4 g
How much fiber do supplements contain?
The median product lists 2 g per serving. One in ten lists 1 g or less, one in ten 6 g or more. The amount printed most often is 1 g (2,773 products).
Products by amount of fiber per serving
6,987 products, log scale; extreme 0.2% at each end left out of the drawing.
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
Which products list the most fiber?
On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).
- QCarbo32 Grape FlavorHerbal Clean16 g
- Lean Meal Grass-Fed Whey Protein VanillaAdaptogen Research16 g
- Lean Meal Grass-Fed Whey Protein ChocolateAdaptogen Research16 g
- QCarbo32 Tropical FlavorHerbal Clean16 g
- Complete Whole Food Health Optimizer Natural FlavorSequel Vega15 g
- Complete Whole Food Health Optimizer Berry FlavorSequel Vega15 g
- Complete Whole Food Health Optimizer Vanilla Chai FlavorSequel Vega15 g
- Liquid Fiber Sugar Free OrangeNature's Way15 g
Have the amounts changed over the years?
Products whose current label entered DSLD in 2011 list a median of 2 g; those entered in 2025, 1.2 g.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 130 | 2 g |
| 2012 | 313 | 2 g |
| 2013 | 489 | 2 g |
| 2014 | 496 | 2.5 g |
| 2015 | 476 | 2 g |
| 2016 | 367 | 2 g |
| 2017 | 413 | 1 g |
| 2018 | 396 | 2 g |
| 2019 | 363 | 2 g |
| 2020 | 677 | 2 g |
| 2021 | 535 | 2 g |
| 2022 | 505 | 2 g |
| 2023 | 591 | 1.5 g |
| 2024 | 672 | 1.9 g |
| 2025 | 564 | 1.2 g |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing fiber by DSLD product type
Brands listing it most: Nature's Plus (123), Nature's Way (116), Garden of Life (76), XYMOGEN (76), Natural Factors (74), NOW (67), Metagenics (64), Enzymatic Therapy (61), Source Naturals (60), Amazing Grass (57).
Every product listing fiber
8,718 products, A to Z by name (page 52 of 175), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Flax Seed PowderAllergy Research Group · off the market2 g
- Flax Seed PowderNutriCology2 g
- Flax- Chia- CoconutBarlean's · off the market3 g
- Flax-N- Whey Mixed BerriesMRMno amount
- Flax-N- Whey VanillaMRM1 g
- FlaxJoy Organic Instant Flax Milk PowderHealth Ranger Select2 g
- Flaxseed FiberMoss Nutrition2 g
- Flex Powder Orange PineappleCore Nutritionalsno amount
- Flora Melts Fruit Punch FlavorDNA Miracles1 g
- FlorafiberHerbalife · off the market1 g
- FloraLaxFlora4 g
- FLORASSIST Prebiotic Chewable Natural Strawberry FlavorLife Extension · off the market1.4 g
- Flud 100% Waxy Maize Fruit PunchDymatize Nutrition · off the marketno amount
- Fo-Ti 560 mgNOW1 g
- Fo-Ti Ho Shou Wu 560 mgNOW · off the market0.53 g
- Focus Natural Coconut FlavorBareOrganics4 g
- Focus Zone Grape Sensation Flavoramino VITALno amount
- Focus Zone Lemon Splash Flavoramino VITALno amount
- For Kids 5 Billion CFU's ProbioticsNature's Answer0.5 g
- Forever Calcium With Magnesium And Vitamin DForever1 g
- Forever Nature-MinForever1 g
- Formula 103DC1 g
- Forskohlii Root PowderBIOVEA Natural Foods4 g
- Forskolin+ Lean with Black Pepper ExtractPurely Inspired1 g
- Forti-FlaxBarlean's Organic Oils · off the market4 g
- Forti-FlaxBarlean's4 g
- Fortified Pycnogenol ComplexSundown Naturals1 g
- Fortify Daily Prebiotic Fiber Raspberry Lemonade FlavoredNature's Way3 g
- Fortify Dual Action Urinary Health 20 BillionNature's Way1 g
- FosAllergy Research Group0.003 g as transcribed, likely a slip
- FosSource Naturals3 g
- FosNutriCology Restore-Biotic0.003 g as transcribed, likely a slip
- FOS 1,000 mgSource Naturals4 g
- FOS 1.25 gAllergy Research Group Essential-Biotic0.003 g as transcribed, likely a slip
- FOS PowderSource Naturals3 g
- Foundation Beauty Elixir Natural Honeydew FlavorHair La Vie0.51 g
- Foundation S'moresArms Race Nutrition0.5 g
- Freeze Dried Acerola Blackberry PowderBIOVEA Natural Foods1 g
- Freeze Dried Acerola Cherry PowderBIOVEA Natural Foods1 g
- Freeze Dried Coconut Water PowderBIOVEA Natural Foodsno amount
- Freeze Dried Cranberry PowderBIOVEA Natural Foods1 g
- Freeze Dried Maqui Berry PowderBIOVEA Natural Foods3 g
- Freeze-Dried Maqui BerryBareOrganics1 g
- Freeze-Dried Stinging Nettles 420 mgPlanetary Herbals1 g
- Fresh Bee PollenY.S. Eco Bee Farms1 g
- Friendly FatsHealthForce SuperFoods3.3 g
- Friendly Force Ultimate Extreme ProbioticHealthForce1 g
- From The Earth GreensThe Vitamin Shoppe1 g
- Frosted Cinnamon Caramel Crunch Nutrition BarsiSatori3 g
- FructoseBulkSupplements.comno amount